
package com.qidian.util;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Calendar;
import java.util.Map;

public class JWTUtils {

    private static final String SALT = "UIhuh!^@#23829BJKHW#&^%";


    /**
     * 生成token  header.payload.sing
     */

    public static String getToken(Map<String, String> map) {


        Calendar instance = Calendar.getInstance();
        instance.add(Calendar.DATE, 7); //默认7天过期

        //创建jwt builder
        JWTCreator.Builder builder = JWT.create();

        map.forEach((k, v) -> {
            builder.withClaim(k, v);
        });

        //指定令牌过期时间
        String token = builder.withExpiresAt(instance.getTime()).sign(Algorithm.HMAC256(SALT));//盐

        return token;
    }


    /**
     * 验证token 合法性
     */

    public static DecodedJWT verify(String token) {
        return JWT.require(Algorithm.HMAC256(SALT)).build().verify(token);
    }


/**
 * 获取token信息的方法
 */

//    public static DecodedJWT getTokenInfo(String token){
//        DecodedJWT verify = JWT.require(Algorithm.HMAC256("@AWSD&*^&12")).build().verify(token);
//        return verify;
//    }
}

